631760540 has 24 divisors (see below), whose sum is σ = 1329102432. Its totient is φ = 252246080.

The previous prime is 631760539. The next prime is 631760543. The reversal of 631760540 is 45067136.

It is a junction number, because it is equal to n+sod(n) for n = 631760497 and 631760506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631760543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17216 + ... + 39495.

It is an arithmetic number, because the mean of its divisors is an integer number (55379268).

Almost surely, 2^631760540 is an apocalyptic number.

It is an amenable number.

631760540 is an abundant number, since it is smaller than the sum of its proper divisors (697341892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631760540 is a wasteful number, since it uses less digits than its factorization.

631760540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57277 (or 57275 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 631760540 is about 25134.8471250573. The cubic root of 631760540 is about 858.0596872571.

The spelling of 631760540 in words is "six hundred thirty-one million, seven hundred sixty thousand, five hundred forty".